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Untapped geothermal sites in the United States havethe estimated potential to deliver
(a) Assuming the brine has the properties of water, determine the required brine flow raw, the requiredeffectiveness of the heat exchanger, and therequired heat transfer surface area. The overall heat transfer coefficient is
(b) Over time, the brine fouls the heat transfer surfaces, resulting in
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- A steam power plant is located in an industrial park owned by the BERTSCHenergy Group. This is used to generate electricity and steam. A mass flow of 80 kg /s with a steam content of 77% at a pressure of 0.0075 MPa flows into a condenser of the steam pawer plant. In a colecting basin with a volume of 20 m, the condensate flows together at a temperature of 50*C. it gives off the rest of the heat completely to the environment. The ambient temperature is a constant 24 *C. ispecific heat capacity of water c= 4.18 ki / (kg K) a) Which heat flow has to be dissipated so that there is saturated liquid at the outlet of the condenser? Enter the result in MW with 2 decimal places. Replyt b) Calculate the specific entropy difference of the condensate in the collecting basin and enter it in kl / (kg " K) with 2 decimal places Replytarrow_forwardIt is proposed to design and develop a Rankine cycle Steam Power Plant in which steam at 80 barand 500 oCis supplied to the turbine which exhausts at a pressure of 0.11 bar into a condenser. Condensate from the condenser is returned to Steam Generator (Boiler) by a Feedwater Pump. The processes in the turbine and pump can be assumed to be reversible adiabatic. In addition, pressure and temperature drops can be neglected throughout the cycle. Sketch the T-s diagram for this cycle and calculate the following performance parameters:i) Cycle Thermal Efficiency ii) Work Ratioiii) Specific Steam Consumptioniv) Condenser Heat Loadv) Mass flow rate of steam to generate a net power output of 40 Megawatts (MW).vi) Mass flow rate of cooling water required for the condenser if the cooling water inlettemperature is 26 oC and its outlet temperature is limited to 40 oC. The specific heat capacityof the cooling water is 4.18 kJ/kg K.viii) The total amount of sensible heat in kW supplied to the…arrow_forwardPlease Answer all my Question .. Please help me , I don't want plagiarism.arrow_forward
- Suppose that the regenerative heat exchanger is only 80% efficient, i.e., only 80% of theheat exhausted in step (B) is absorbed in step (D). For an ideal gas working fluid (Cv = 5/2 R, R = 8.3145 J/mol K) operating with the heat reservoirs at Th = 400 K and Tc = 300 K, determine how much work per mol of working fluid is needed to supplement the regenerative heat exchanger in step (D) and ensure that the cycle is completed. What is the new ηcycle in light of this additional work requirement? (the answer does not need to be numeric)arrow_forwardi need the answer quicklyarrow_forwardAs shown below, a refrigeration cycle condenses a flow of ammonia from a saturated vapor at 4 barto a saturated liquid. The entering volumetric flow rate of the ammonia is 0.1 m3/s. The ammonia functions asthe cold reservoir for the refrigeration cycle, and the hot reservoir is at 25 ∘C. A faded specification sheet for therefrigeration cycle reads that the required power input is 35 kW.(a) Is this cycle possible? Why or why not?(b) If the cycle is impossible, how much work input is required to make the cyclearrow_forward
- If the net power output of the cycle is 100 MW, and that the working fluid enters the turbine as saturated steam at P= 8.00 MPa and exist the condenser as saturated liquid at P=8kpa Determine: a) the terminal efficiency (%) b) The mass flow rate of the steam , kg/s C) The rate of heat transfer to the working fluid as it passes through the boiler, KW D) The heat rejected by the working fluid as it passes through the condenser, kW. e) The mass flow rate of the cooling water, kg/s. N.B ( the cooling water enters the condenser at 15°C and leaves at 35°C)arrow_forwardOcean thermal energy conversion (OTEC) plants use the temperature difference in the ocean (80°F at the surface and 40°F at 2000 ft. depth) in a Rankine cycle to generate electricity. Ammonia is the working fluid. Ammonia is boiled using the 80°F surface water, and condensed against the 40°F deep water, which is pumped to the surface. Very large heat exchangers are required, due to the small LMTDs and the low plant thermal efficiency (2.5%). The heat exchangers will comprise 40 % of the plant cost. In order to reduce the condenser cost, we will evaluate the condenser tube material savings provided by the use of a vertical fluted "Gregorig" condensing surface. The reference smooth tube condenser design uses 1.0 in. I.D. aluminum tubes, 0.062 in. wall x 30 ft. long. Sea water flows on the tube-side at 8 ft/sec. Ammonia condenses at 50°F on the outer surface of the vertical tubes with 4Tvs = 4°F. The ammonia properties at 48°F are: p= 39.1 lbm/ft³, k₁= 0.307 Btu/hr-ft- °F, и 1.426 × 10-2…arrow_forwardA refrigeration system operated on an ideal vapor-compression using R-12 with a vaporizing temperature of -10 degrees Celsius and a condensing temperature of 30 degrees Celsius, it requires 15 hp to drive the motor of the compressor. Find the ff: Enthalpies at each point of the cycle in kJ/kg Refrigerating Capacity in TOR • Mass of the Refrigerant in kg/s Percent Quality in the mixture Heat Rejected in kW Coefficient of Performance • Schematic and P-h Diagramarrow_forward
- GIVEN: We know the mass flow rate of the steam to be 1.093 kg/s FIND THERMAL EFF as wellarrow_forwardQuick pleasearrow_forwardA steam condenser receives 10 kg per second of steam with an enthalpyof 2570 KJ/kg. Steam condenses into liquid and leaves with an enthalpy of160 KJ/kg, if cooling water passes through the condenser with temperatureincreases from 13 o C to 24 o C. Calculate the cooling water flow rate inkg/sec.arrow_forward
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